Balancing innovation and harm







See related articles, pages 418 and 486



In an editorial in 2007, I questioned whether marketed vaginal mesh kits constituted “rampant experimentation or improved quality of care.” In the following years, mesh kits became used more widely, and complications became more evident. Surgeons were pitted against one another; media coverage proliferated, and class action lawsuits are ongoing. In July 2011, the Food and Drug Administration (FDA) issued a Safety Communication to inform the medical community and patients that serious complications associated with surgical mesh for transvaginal repair of pelvic organ prolapse were “not rare” and that it was unclear whether such surgeries were more effective than traditional nonmesh repairs.


Has innovative optimism once again outpaced pragmatism? We are in the midst of another storm within the gynecologic community: uterine morcellation during laparoscopic or robotic surgery. The launch and rise of power morcellators have many similarities to those of vaginal mesh kits: both were cleared by the FDA as a class II device, were marketed heavily by industry, and were adapted widely, despite the absence of research evidence. Both have flaws considered obvious—in retrospect. Yet, uncommon complications become apparent only after a technique is adapted widely.


Different forces brought the issue to a head for the 2 technologies: for vaginal mesh kits, the force was an increasing number of women seeking treatment for complications, mainly mesh extrusions and pain. For uterine morcellation, the force was a couple, Dr Hooman Noorchashm and his wife, Dr Amy Reed, who underwent a robotic-assisted hysterectomy with a surprise finding of sarcoma upstaged from 1 to 4 by the intraoperative use of the morcellator. In Dr Noorchashm’s view, “Morcellation is playing Russian roulette with a deadly outcome,” citing a risk of 1 in 400 of sarcoma in women undergoing surgery for fibroids. Upstaging a sarcoma could decrease the 5-year survival of women from 60% for stage I to 15-22% for stages III-IV sarcoma. The couple launched a media campaign calling on an immediate moratorium on intracorporeal uterine morcellation and on all morcellation devices.


How have professional groups responded? In a position statement in December 2013, the Society of Gynecologic Oncology noted that “fewer than one out of 1000 women who undergo hysterectomy for leiomyomas will have an underlying malignancy,” that it currently is not possible to diagnose sarcomas preoperatively, and that these malignancies carry poor prognoses even when specimens are removed intact. The statement concludes by emphasizing the importance of informed consent. In March, the AAGL, Advancing Minimally Invasive Gynecology Worldwide, updated its members that it is establishing a task force to review the scientific evidence and best practices regarding morcellation.


Although the recent media storm has focused on disseminating cancerous tissue throughout the abdomen, morcellation is not without other risks. In a review searching articles and the Manufacturer and User Facility Device Experience FDA device database from 1993-2014, Milad and Milad identified 55 complications, including 6 deaths attributed to morcellator-related complications. Without a clear denominator, it is difficult to put this risk into perspective. Reports are trickling in describing problems related to the dissemination of benign endometrial tissue. For example, the Images report in this month’s issue demonstrates the diagnostic dilemma presented by dissemination of adenomyosis after robotic hysterectomy with morcellation.


This issue raises several questions: How should new technologies be introduced and monitored? What is an acceptable level of risk? Who decides? It is well-known that physicians and patients, given the same information, perceive magnitude of risk differently. Further, if people perceive the risk of benefit to be high, they judge the risk of harm to be low and vice versa. The way in which health scenarios and risk information is presented affects how people evaluate such risks. Slovic et al, noting that both rational and experiential systems are needed to guide decision-making, question, “On the one hand, how do we apply reason to temper the strong emotions engendered by some risk events? On the other hand, how do we infuse needed ‘doses of feeling’ into circumstances where lack of experience may otherwise leave us too ‘coldly rational’?”


Despite the fact that approximately 20,000 laparoscopic and robotic supracervical hysterectomies (techniques generally accompanied by intraabdominal power morcellation) are done each year in the United States, we do not know the true incidence of unexpected sarcoma during surgery for apparent benign uterine disease. Population incidence rates may not apply to women who undergo surgery for fibroid tumors. Kho and Nezhat summarized 7 case series that were published from 1983-2010 that together reported 13 unexpected uterine sarcomas in 5666 uterine procedures (with risks ranging from 0–0.49%).


Currently, clinicians recommend that women with fibroid tumors undergo surgery to treat symptoms, not to diagnose and remove early potential sarcomas. The American College of Obstetricians and Gynecologists Practice bulletin notes, “If a comparison is made between the prevalence of leiomyosarcomas discovered incidentally (1/2000) and the mortality rate for hysterectomy for benign disease (1–1.6/1000 for premenopausal women), the decision to proceed to hysterectomy to find potential sarcomas should be made cautiously.” Yet, this strategy relies on accurate data about the risk of cancer in fibroid tumors.


What do we recommend now? The tide away from open abdominal hysterectomy has irrevocably turned. However, this does not mean that power morcellation is the only option available to treat women with fibroid tumors. Surgeons should prioritize vaginal hysterectomy (the original “natural orifice surgery”); morcellation, if needed, usually can occur in the vagina with the use of a scalpel, rather than a power-morcellator. However, we note that the assumption that this long-lived technique actually minimizes uterine tissue spread, to our knowledge, has not been examined rigorously. When fibroid size, location, or concomitant pelvic diseases create deterrents, vaginal extraction from a laparoscopic or robotic approach should be prioritized; in small groups of women, such a technique appears not to promote cancer spread in women who undergo operation for endometrial cancer. Minilaparotomy to extract tissue should not be seen as a defeat to the principles of minimally invasive surgery. We question the burgeoning sentiment to perform in-bag morcellation, because the currently available devices may require surgeons to add a layer of complexity with which they may not be familiar, thus generating other problems from limited visibility to retained portions of the bag-to-bag breakage.


In his thoughtful clinical opinion in this month’s American Journal of Obstetrics and Gynecology that summarizes the debate over robotics in benign gynecologic surgery, Rardin notes that “the issue is not whether the robot has any role but rather to define the role in an institutional environment.” Similarly, the controversy over vaginal mesh led to defining more clearly its role in our surgical armamentarium such that its use is restricted to women in whom the potential benefit afforded by mesh augmentation is likely to outweigh the potential harm. Defining the role of both the robot and the instruments that are used to accomplish minimally invasive surgery is an important priority.


We must become better “futurologists”—scientists who attempt to explore systematically predictions and possibilities about the future and how they can emerge from the present. Curiosity, creativity, and optimism, which are key attributes for successful surgeons, can also make it difficult for us to foresee downstream events.


Surgeons, just as engineers, should consider new procedures and techniques from a risk management and design point of view. Consistent with the FDA’s mandate on medical device development, surgeons should study all aspects of surgery, systematically identify and reduce risks, and integrate such study into evolving changes in surgical instruments and techniques.


We fully support initiating a registry for all new technologies in our field, following the example of the Pelvic Floor Disorders Registry initiated by the American Urogynecologic Society with representatives of the FDA, Centers for Medicare and Medicaid Services, industry, and patients on the Stakeholder Advisory Board.


Finally, we support patient-centered valuing of surgical risks and benefits and the development of shared decision-making tools and processes for interventions in our field. By encouraging evidence-based innovation while balancing harms and understanding how individual women value benefits and risks, we will find a sure way forward.

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May 11, 2017 | Posted by in GYNECOLOGY | Comments Off on Balancing innovation and harm

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